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Official data from INPI

PROCESSO E APARELHO PARA PERFILAGEM DE PERMEABILIDADE DE FORMACOES TERRESTRES ATRAVESSADAS POR UM FURO DE SONDAGEM

Em AnáliseInvention Patent

Application data

Number

PI8104029

Type

Invention Patent

Filing

07/07/1980

Publication

03/16/1982

Progress at the INPI

  1. Filing07/07/80
  2. Publication03/16/82
  3. Examination05/15/84
  4. Allowance07/09/85
  5. Grant02/04/86
  6. Terminated05/24/88

The patent was granted on 02/04/1986 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 05/24/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PRAD RES & DEV NV [NL]

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Inventors

C. N. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/24/1988

RPI 918

Concessão da patente

#16.1

02/04/1986

RPI 798

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Republicação - classificação IPC

#15.11

01/15/1985

RPI 743

Exigência - art. 36 da LPI

#6.1

10/16/1984

RPI 730

Solicitação de exame técnico

#4.1

05/15/1984

RPI 708

Publicação do pedido de patente

#3.1

03/16/1982

RPI 595

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